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Finding the Fourth Proportional to 478,572.33, 717,872.43 and 178,995.77

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Solution

The fourth proportional to 478,572.33, 717,872.43 and 178,995.77 is: 268,498.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,572.33 : 717,872.43 = 178,995.77 : x
  2. Step 2: Convert to fraction form
    478,572.33/717,872.43 = 178,995.77/x
  3. Step 3: Cross multiply
    478,572.33x = 717,872.43 × 178,995.77
  4. Step 4: Simplify right side
    478,572.33x = 128,496,124,780.26
  5. Step 5: Solve for x
    x = 128,496,124,780.26/478,572.33
  6. Step 6: Final answer
    x = 268,498.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.